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Mathematics, 07.08.2021 09:00 autumnsusan190ox9kn4

Gabby left the mall and drove north. Violet left 2 hours later, driving 18 mph faster to catch up with Gabby. After 3 hours, she caught up with Gabby. Find Gabby's average speed.
O 45 mph
O 54 mph
O 27 mph
O 36 mph

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